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EP0639475A1 - Aufprallträger für Fahrzeugtür und Träger - Google Patents

Aufprallträger für Fahrzeugtür und Träger Download PDF

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Publication number
EP0639475A1
EP0639475A1 EP94305971A EP94305971A EP0639475A1 EP 0639475 A1 EP0639475 A1 EP 0639475A1 EP 94305971 A EP94305971 A EP 94305971A EP 94305971 A EP94305971 A EP 94305971A EP 0639475 A1 EP0639475 A1 EP 0639475A1
Authority
EP
European Patent Office
Prior art keywords
curvilinear
beads
bracket
tubular
radius
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP94305971A
Other languages
English (en)
French (fr)
Inventor
James Alan Alberda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benteler Automotive Corp
Original Assignee
Benteler Automotive Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Benteler Automotive Corp filed Critical Benteler Automotive Corp
Publication of EP0639475A1 publication Critical patent/EP0639475A1/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
    • B60J5/0437—Elongated type elements, e.g. beams, cables, belts or wires characterised by the attachment means to the door, e.g. releasable attachment means

Definitions

  • This invention relates to a vehicle door impact beam assembly or a beam and bracket combination, and also to a bracket or extension of an impact tubular door beam assembly.
  • a tubular beam having a steel composition such as that in US-A-4,210,467 is mounted between the inner and outer door panels.
  • FMVSS 214 Federal Motor Vehicle Safety Standard 214
  • a tubular beam having a steel composition such as that in US-A-4,210,467 is mounted between the inner and outer door panels.
  • Employees of the present applicants have developed various tubular door beam configurations heretofore as set forth in US-A-4,636,608, US-A-4,708,390, UA-A-5,118,159, and US-A-5,123,694, such beams having their ends secured to brackets (commonly called extensions) which are in turn mounted to the door.
  • these brackets have a concave recess of the same configuration as the tube and the same diameter as, or slightly larger than, the diameter of the convexly curved door beam tube ends.
  • the convex and concave size correlation must be close in order to assure an effective weld bond between the tube and bracket, and thereby assure proper impact protection to the vehicle passenger.
  • These concave recesses are formed by a pair of stamping dies.
  • the present invention aims to alleviate these problems of the prior art.
  • a vehicle door impact beam assembly comprises an elongated, tubular steel, vehicle door impact beam, each end of which has a convex curvilinear outer surface to form opposite curvilinear, outwardly facing connector surfaces, a steel plate at each end having at least one portion which is generally flat, and having a pair of opposite faces, a pair of elongated beads upstanding from one of these faces of the steel plate, each bead having a convex curvilinear cross section, the beads being spaced from and parallel to each other, defining elongated, adjacent, mutually facing, curvilinear surfaces engaging the opposite curvilinear, outwardly facing surfaces of the tubular impact beam, and each curvilinear bead surface being welded to one of the curvilinear beam surfaces of one of the beam ends.
  • the beads may be formed from the steel plate, each having a radius of curvature smaller than the radius of curvature of the ends of the beam.
  • the mutually facing curvilinear bead surfaces are preferably spaced apart
  • a door beam mounting bracket capable of interfitting with and mounting impact door beam tubes of different diameters without sacrificing impact effectiveness, and this may be advantageously combined with a tubular door beam.
  • the same type of bracket may, if desired, be used for a range of door beam diameters, thereby greatly reducing the stamping die inventory and equipment investment cost.
  • the bracket structure may add strength to the bracket, as well as accommodating a range of door beam tubes of different sizes.
  • the bracket is a plate which is generally flat, or at least has a generally flat portion into which may be formed a pair of longitudinal, spaced, parallel, upstanding beads of convex curvilinear cross section and of a radius preferably substantially smaller than the radius of a tube beam fitted therewith.
  • the spacing between adjacent, facing surfaces of these beads is preferably less than the maximum and minimum diameter beam tubes of the diameter range to be fitted, and is more preferably almost as large as the minimum diameter tube of the range, so that a pair of side welds between the tube and each bead of the bracket are near the neutral axis or plane of the center line of the tube, i.e., not significantly on the tension side or the compression side of the beam.
  • the height of the beads is also preferably a fraction of the tube diameter.
  • the bracket is not only capable of accommodating a range of tube diameters, and is of improved strength, but is highly advantageous in that its structure also enables welding connection between the beam and bracket to be achieved without a programmed robot.
  • the bracket preferably comprises a plate with a pair of elongated beads upstanding therefrom and is preferably of steel.
  • the beads are preferably formed from or integral with the plate.
  • a preferred door beam assembly 10 there depicted includes an elongated, tubular, steel door beam 12 and a pair of steel mirror image brackets or extensions 14 and 14' to which the beam is secured by welding.
  • Impact door beam 12 is shown to have a configuration generally comparable to that set forth in prior US-A-5,118,159, employing contour cut ends 12', with all portions of the cut ends having a moment capacity at least equal to the bending moment.
  • the tubular beam is basically cylindrical in configuration, having a neutral center line axis 15, a diameter and a radius. Although the contoured ends have portions removed, the portions remaining still have the same diameter and radius. The two ends of the beam are welded to the respective brackets 14 and 14' in a manner to be described.
  • Each bracket 14 comprises a steel plate having opposite faces and either being generally flat or having a portion 16 which is generally flat.
  • the offset outer end 18 of the depicted bracket is formed to accommodate a particular door style, spacing between the inner and outer panels of the vehicle door, and location of the door member to which the bracket is to be attached. This attachment is typically done with bolts or by welding. In the embodiment depicted, there are openings through the bracket for optional bolted attachment.
  • These beads and other offset features of the bracket are preferably formed by stamping dies. These beads are shown to extend substantially the length of the flat portion 16 of bracket 14.
  • the outer surfaces of these beads are convexly curvilinear in cross section, with each bead having as small a radius as possible considering the practicalities of the stamping dies.
  • the diameter of each bead is substantially smaller than the minimum diameter of the tube to be affixed thereto.
  • the typical range of impact beam outer diameters to be accommodated is about 25 to about 40 millimetres, with the most common being 25 to 36 millimetres.
  • the tubular configuration of the impact beam presents opposite, curvilinear, outwardly facing connector surfaces to the beads on the bracket.
  • the spacing of the beads or ribs 20 is purposely limited to an amount such that the inside, convex curvilinear abutment surfaces facing each other are spaced apart a small amount less than the smallest diameter tubular door beam of 25 millimetres, such that the line of engagement of the impact beam with each of the elongated beads or ribs 20 is fairly close to the neutral plane of the neutral axis of the center line of the beam, i.e, are only a small amount on the tensile side of the beam.
  • the two components are fusion welded together, normally MIG welded, at the contact lines between the curvilinear convex beam and the two curvilinear convex beads. These weld seams are shown at 24 in Fig. 3.
  • the interengagement of the tube ends to beads 20 should be accurate enough that the spacing 26 between any portion thereof is less than 0.75 millimetres.
  • a desired minimum length from the end of the tube to where the weld 20 begins is about 20-25 millimetres. Thus, if a 30 millimetre length weld is desired, a total length of 55 millimetres minimum of pocket length is required along beads 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
EP94305971A 1993-08-19 1994-08-12 Aufprallträger für Fahrzeugtür und Träger Ceased EP0639475A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/109,154 US5370437A (en) 1993-08-19 1993-08-19 Universal impact beam tube pocket
US109154 1993-08-19

Publications (1)

Publication Number Publication Date
EP0639475A1 true EP0639475A1 (de) 1995-02-22

Family

ID=22326091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94305971A Ceased EP0639475A1 (de) 1993-08-19 1994-08-12 Aufprallträger für Fahrzeugtür und Träger

Country Status (3)

Country Link
US (1) US5370437A (de)
EP (1) EP0639475A1 (de)
JP (1) JPH07172172A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19600932A1 (de) * 1996-01-12 1997-07-17 Ymos Ag Ind Produkte Kraftfahrzeugtür mit integriertem Seitenaufprallschutz
DE10212792B4 (de) * 2002-03-22 2005-05-12 Benteler Automobiltechnik Gmbh Seitenaufprallträger

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3023754B2 (ja) * 1994-12-27 2000-03-21 株式会社ユタカ技研 自動車用ドアビーム
JP3763858B2 (ja) * 1995-02-14 2006-04-05 ユニプレス株式会社 自動車用ドアのガードビーム
US5580120A (en) * 1995-02-23 1996-12-03 Mascotech Tubular Products, Inc. Vehicle door intrusion beam
US5785376A (en) * 1995-06-21 1998-07-28 Mascotech Tubular Products, Inc. Vehicle door beam
SE9601246L (sv) * 1996-04-01 1997-10-02 Plannja Hardtech Ab Skyddsbalk
US5813719A (en) * 1997-09-25 1998-09-29 Trim Trends, Inc. Side intrusion beam assembly having compensating welds at brackets
WO2000015453A1 (en) * 1998-09-16 2000-03-23 Cosma International Inc. Vehicle door reinforcing beam and method of making it
US6454884B1 (en) 2000-06-12 2002-09-24 Pullman Industries, Inc. Method of manufacturing a vehicle structural beam
US6382707B1 (en) * 2000-10-09 2002-05-07 Daimlerchrysler Corporation Reinforced door assembly for a motor vehicle
KR100440292B1 (ko) * 2001-08-30 2004-07-15 현대자동차주식회사 자동차의 리어도어구조
US6918224B2 (en) 2002-05-01 2005-07-19 Benteler Automotive Corporation Heat treatment strategically strengthened door beam
FR2920350A1 (fr) * 2007-09-03 2009-03-06 Peugeot Citroen Automobiles Sa Porte laterale renforcee pour vehicule automobile.
DE102009011378B4 (de) * 2009-03-05 2012-03-22 Benteler Automobiltechnik Gmbh Türaufprallträger
US20110229250A1 (en) * 2010-03-18 2011-09-22 Gm Global Technology Operations, Inc. Thermally Compensating End Bracket for Mixed Metal Impact Beam
US8727421B2 (en) 2011-08-31 2014-05-20 Shape Corp. Door beam assembly with roll formed beam
JP5949598B2 (ja) * 2013-03-04 2016-07-06 マツダ株式会社 車両のドア構造
DE102013215323A1 (de) * 2013-08-05 2015-02-05 Ford Global Technologies, Llc Befestigungselement für ein Karosserieteil und Befestigungssystem mit Befestigungselement
FR3111298A1 (fr) * 2020-06-16 2021-12-17 Psa Automobiles Sa Porte latérale de véhicule, à barre de renfort multipièces adaptable en fonction du niveau de protection
JP7148664B1 (ja) * 2021-03-30 2022-10-05 本田技研工業株式会社 車両用サイドドア構造

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708390A (en) * 1985-11-15 1987-11-24 Benteler Corporation Laser contour cut door beams
US5123694A (en) * 1991-06-19 1992-06-23 Benteler Industries, Inc. Spiral taper cut impact beam
US5232261A (en) * 1992-06-04 1993-08-03 Nhk Spring Co., Ltd. Door impact beam for an automobile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750867C2 (de) * 1977-11-14 1983-10-20 Benteler-Werke Ag Werk Neuhaus, 4790 Paderborn Verwendung einer Stahllegierung für Rohre zur Türverstärkung
US4636608A (en) * 1985-11-15 1987-01-13 Benteler Corporation Laser contour cut door beams
US5118159A (en) * 1990-12-19 1992-06-02 Benteler Industries, Inc. Optimized moment capacity nestable door beam
US5277470A (en) * 1992-10-21 1994-01-11 The Budd Company Tapered intrusion beam for reinforcing a vehicle door

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708390A (en) * 1985-11-15 1987-11-24 Benteler Corporation Laser contour cut door beams
US5123694A (en) * 1991-06-19 1992-06-23 Benteler Industries, Inc. Spiral taper cut impact beam
US5232261A (en) * 1992-06-04 1993-08-03 Nhk Spring Co., Ltd. Door impact beam for an automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19600932A1 (de) * 1996-01-12 1997-07-17 Ymos Ag Ind Produkte Kraftfahrzeugtür mit integriertem Seitenaufprallschutz
DE10212792B4 (de) * 2002-03-22 2005-05-12 Benteler Automobiltechnik Gmbh Seitenaufprallträger

Also Published As

Publication number Publication date
US5370437A (en) 1994-12-06
JPH07172172A (ja) 1995-07-11

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